General camera discussion

Mechanical shutter has a speed limit, for instance 1/2000, 1/4000 or 1/8000. Electrical shutter can often go much faster (in terms of exposure; not in terms of readout speed, which can give rolling shutter). So for bright days, electrical shutter can replace the ND filters of old.

Also electrical shutters allow for electronic first curtain shutter, but I'm not entirely clear of the benefits beyond possibly reducing shutter shock.

From a camera building point of view, an electronic shutter is almost inevitable since the photons will have to start and stop being read out at some point, so you might as well enable those start and stop moments to be the beginning and end of the exposure. It just wasn't feasible to use only electronic shutters for stills images until recently, due to low readout speeds creating rolling shutter. Video cameras have much lower resolution, so also much lower rolling shutter
 
For static scenes, yes (although it sometimes uses a lower bitdepth, like 10bit instead of 12, for raw). For scenes with movement, it depends on the direction and speed of movement. Stacked sensor cameras like the Nikon Z9 (electronic shutter only) read out their sensor from top to bottom in about 1/100th of a second, and very little movement is too fast for that. The Hasselblad X1D has no shutter in the body, only a leaf shutter in certain lenses, all other lenses need electronic shutter... Which happens at 1/3rd of a second, so is useless for any scene with movement.
 
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Also electrical shutters allow for electronic first curtain shutter, but I'm not entirely clear of the benefits beyond possibly reducing shutter shock.
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Shutter shock and shutter wear. Remember with a mirrorless camera when you press the shutter it's:

Shutter Close / Shutter Open / Shutter Close / Shutter Open

Every time. So electronic first current eliminates an open/close.
 
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